Yes, it is the system disk, and must be booted. Alternatively if you make a disk with your favorite sounds/patches the system can copy the OS onto that disk, so you can boot your favorite sound disk.

If you wish you can also boot with the sequencer disk, but if you want to use onboard sounds you must load in the utility disk afterwards. If you want to use the S-330 as sequencer only, then the Director-S disk will do.

No, unfortunately I no longer have those videos up, but there wasn't much help in them anyway.

It's a long time since I used it, but I remember SDISK being pretty straightforward to use (I used it to write Roland library disks for my W-30, on a DOS computer). You'll need 720kB floppies, and you'll need to format them correctly, if the S-330 works the same as the W-30 in that respect.

Silverfish wrote:Did anyone ever try my re-hacked S-550 Director-S disk image? I never did test it myself. I should still have it, if anyone is still interested. No guarantees that it actually works, though.

I'd like to try it. Just restored my S-550. It's finally working right.